"Blue light filtration typically refers to a coating, which can be applied to corrective prescription lenses or plain lenses," Dr. Jen Tsai, an optometrist in New York City and founder of Line of ...

Learn more› By Kaitlyn Wells and Zoe Vanderweide If you believe the hype, blue-light blocking glasses will prevent headaches, decrease eyestrain, and help you sleep like a baby. But do they work?

Think blue light is hurting your sleep cycle? A new study suggests it can actually improve the overall sleep quality of older adults -- but only if they time it right. NY Post Composite Blue light ...